Rising buyer demand and increasingly short supply are lighting a fire under the U.S. housing market. Home prices in August surged on a monthly basis by the largest margin in 11 years, and the annual price gain of 6.2 percent is a sharp acceleration compared to the past two years, according to CoreLogic.

"Housing values continue to rise briskly on stronger fundamental and investor-fueled demand, as well as lack of adequate supply," said Anand Nallathambi, president and CEO of CoreLogic. "This continued price appreciation is contributing to a growing affordability crisis in many markets around the country."